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MATLAB: An Introduction with Applications

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Question

The following table presents the percentage of students who tested proficient in reading and the percentage who tested proficient in math for 5 randomly
selected states in the United States. Compute the least-squares regression line for predicting math proficiency from reading proficiency.
State
Texas
Michigan
New York
California
Florida
Send data to Excel
Percent Proficient
in Reading
73
73
75
60
66
Percent Proficient
in Mathematics
78
The equation for the least squares regression line is y
66
70
59
68
Round the slope and y-intercept to four decimal places as needed.

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For the population of college students, the number of hours spent studying per week is normally distributed with a = 4.40 and = 2.32 hours. We surveyed a random sample of students majoring in psychology about the number of hours they spent studying this past week. The data is as follows: 6, 8, 9, 4, 3, 11, 4, 6, 5, 7 What is the dependent variable? What is the level of measurement of the dependent variable? 3. Is there a significant increase in the number of hours spent studying for our sample compared to the population of college students? Perform a complete hypothesis test (z-test) using alpha = .01 level. SHOW ALL WORK
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